Curious Universe Making Machines Science Experiement Kit - For Children Ages 6 to 9 - Home Learning STEM Set Toy – 1 Sept. 2020

Curious Universe Kids: Making Machines - Book & Science Experiments Kit, STEM Educational Kits, Build A Catapult, 9 Experiments, Includes 51 Pieces, Learn Robotics & Physics, Hinkler, Kids Ages 5-7

Thames & Kosmos Simple Machines Science Experiment & Model Building Kit, Introduction to Mechanical Physics, Build 26 Models to Investigate The 6 Classic Simple Machines

Learning Resources Simple Machines, STEM, Early Engineering Toy Set of 5